musculus sphincter ani
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Related to musculus sphincter ani: musculus sphincter ani internus, musculus sphincter ani externus
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| Noun | 1. | musculus sphincter ani - the sphincter muscle of the anus anus - the excretory opening at the end of the alimentary canal anatomical sphincter, sphincter, sphincter muscle - a ring of muscle that contracts to close an opening musculus sphincter ani externus - an external ring of striated muscle surrounding the anus musculus sphincter ani internus - an internal ring of smooth muscle formed by circular fibers of the rectum |
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